diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 2bce8dca..f081ef3b 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,3 +1,8 @@
+### 1.12.3 - 22 December 2023
+* Add initializer based on an existing instance, letting us copy an already initialized XrmMockup instance (@mkholt)
+* Add optional tracing class factory to settings (@mkholt)
+* Add timers during initialization (@mkholt)
+
 ### 1.12.2 - 24 August 2023
 * Add flag to mitigate duplicate security role names (@mkholt)
 
diff --git a/src/MetadataGen/MetadataGenerator11/AssemblyInfo.fs b/src/MetadataGen/MetadataGenerator11/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/MetadataGen/MetadataGenerator11/AssemblyInfo.fs
+++ b/src/MetadataGen/MetadataGenerator11/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/MetadataGen/MetadataGenerator13/AssemblyInfo.fs b/src/MetadataGen/MetadataGenerator13/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/MetadataGen/MetadataGenerator13/AssemblyInfo.fs
+++ b/src/MetadataGen/MetadataGenerator13/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/MetadataGen/MetadataGenerator15/AssemblyInfo.fs b/src/MetadataGen/MetadataGenerator15/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/MetadataGen/MetadataGenerator15/AssemblyInfo.fs
+++ b/src/MetadataGen/MetadataGenerator15/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/MetadataGen/MetadataGenerator16/AssemblyInfo.fs b/src/MetadataGen/MetadataGenerator16/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/MetadataGen/MetadataGenerator16/AssemblyInfo.fs
+++ b/src/MetadataGen/MetadataGenerator16/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/MetadataGen/MetadataGenerator365/AssemblyInfo.fs b/src/MetadataGen/MetadataGenerator365/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/MetadataGen/MetadataGenerator365/AssemblyInfo.fs
+++ b/src/MetadataGen/MetadataGenerator365/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/XrmMockup2011/AssemblyInfo.fs b/src/XrmMockup2011/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/XrmMockup2011/AssemblyInfo.fs
+++ b/src/XrmMockup2011/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/XrmMockup2011/XrmMockup.cs b/src/XrmMockup2011/XrmMockup.cs
index 28cb3c4a..c83e519f 100644
--- a/src/XrmMockup2011/XrmMockup.cs
+++ b/src/XrmMockup2011/XrmMockup.cs
@@ -25,10 +25,11 @@ public class XrmMockup2011 : XrmMockupBase {
         private static Dictionary<XrmMockupSettings, XrmMockup2011> instances = new Dictionary<XrmMockupSettings, XrmMockup2011>();
 
 
-        private XrmMockup2011(XrmMockupSettings Settings) 
-            : base(Settings) {
+        private XrmMockup2011(XrmMockupSettings Settings, MetadataSkeleton metadata = null, List<Entity> workflows = null, List<SecurityRole> securityRoles = null) :
+            base(Settings, metadata, workflows, securityRoles)
+        {
         }
-        
+
         /// <summary>
         /// Gets an instance of XrmMockup2011
         /// </summary>
@@ -42,6 +43,19 @@ public static XrmMockup2011 GetInstance(XrmMockupSettings Settings) {
             instances[Settings] = instance;
             return instance;
         }
+
+        /// <summary>
+        /// Gets an instance of XrmMockup2011 using the same metadata as the provided
+        /// </summary>
+        /// <param name="xrmMockup">The existing instance to copy</param>
+        /// <param name="settings">
+        ///     If provided, will override the settings from the existing instance.<br/>
+        ///     <em>NOTE: Changing <see cref="XrmMockupSettings.MetadataDirectoryPath"/> will not trigger a reload</em>
+        /// </param>
+        public static XrmMockup2011 GetInstance(XrmMockup2011 xrmMockup, XrmMockupSettings settings = null)
+        {
+            return new XrmMockup2011(settings ?? xrmMockup.Settings, xrmMockup.Metadata, xrmMockup.Workflows, xrmMockup.SecurityRoles);
+        }
     }
 
 }
diff --git a/src/XrmMockup2013/AssemblyInfo.fs b/src/XrmMockup2013/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/XrmMockup2013/AssemblyInfo.fs
+++ b/src/XrmMockup2013/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/XrmMockup2013/XrmMockup.cs b/src/XrmMockup2013/XrmMockup.cs
index 1ff397d7..1d4aad8d 100644
--- a/src/XrmMockup2013/XrmMockup.cs
+++ b/src/XrmMockup2013/XrmMockup.cs
@@ -19,10 +19,11 @@ public class XrmMockup2013 : XrmMockupBase {
         private static Dictionary<XrmMockupSettings, XrmMockup2013> instances = new Dictionary<XrmMockupSettings, XrmMockup2013>();
 
 
-        private XrmMockup2013(XrmMockupSettings Settings) : 
-            base(Settings) {
+        private XrmMockup2013(XrmMockupSettings Settings, MetadataSkeleton metadata = null, List<Entity> workflows = null, List<SecurityRole> securityRoles = null) :
+            base(Settings, metadata, workflows, securityRoles)
+        {
         }
-        
+
         /// <summary>
         /// Gets an instance of XrmMockup2013
         /// </summary>
@@ -36,5 +37,18 @@ public static XrmMockup2013 GetInstance(XrmMockupSettings Settings) {
             instances[Settings] = instance;
             return instance;
         }
+
+        /// <summary>
+        /// Gets an instance of XrmMockup2013 using the same metadata as the provided
+        /// </summary>
+        /// <param name="xrmMockup">The existing instance to copy</param>
+        /// <param name="settings">
+        ///     If provided, will override the settings from the existing instance.<br/>
+        ///     <em>NOTE: Changing <see cref="XrmMockupSettings.MetadataDirectoryPath"/> will not trigger a reload</em>
+        /// </param>
+        public static XrmMockup2013 GetInstance(XrmMockup2013 xrmMockup, XrmMockupSettings settings = null)
+        {
+            return new XrmMockup2013(settings ?? xrmMockup.Settings, xrmMockup.Metadata, xrmMockup.Workflows, xrmMockup.SecurityRoles);
+        }
     }
 }
diff --git a/src/XrmMockup2015/AssemblyInfo.fs b/src/XrmMockup2015/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/XrmMockup2015/AssemblyInfo.fs
+++ b/src/XrmMockup2015/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/XrmMockup2015/XrmMockup.cs b/src/XrmMockup2015/XrmMockup.cs
index 331bf04d..78315d35 100644
--- a/src/XrmMockup2015/XrmMockup.cs
+++ b/src/XrmMockup2015/XrmMockup.cs
@@ -16,13 +16,14 @@ namespace DG.Tools.XrmMockup {
     /// </summary>
     public class XrmMockup2015 : XrmMockupBase {
 
-        private static Dictionary<XrmMockupSettings, XrmMockup2015> instances = new Dictionary<XrmMockupSettings, XrmMockup2015>();
+        private static readonly Dictionary<XrmMockupSettings, XrmMockup2015> instances = new Dictionary<XrmMockupSettings, XrmMockup2015>();
 
 
-        private XrmMockup2015(XrmMockupSettings Settings) : 
-            base(Settings) {
+        private XrmMockup2015(XrmMockupSettings Settings, MetadataSkeleton metadata = null, List<Entity> workflows = null, List<SecurityRole> securityRoles = null) :
+            base(Settings, metadata, workflows, securityRoles)
+        {
         }
-        
+
         /// <summary>
         /// Gets an instance of XrmMockup2015
         /// </summary>
@@ -36,5 +37,18 @@ public static XrmMockup2015 GetInstance(XrmMockupSettings Settings) {
             instances[Settings] = instance;
             return instance;
         }
+
+        /// <summary>
+        /// Gets an instance of XrmMockup2015 using the same metadata as the provided
+        /// </summary>
+        /// <param name="xrmMockup">The existing instance to copy</param>
+        /// <param name="settings">
+        ///     If provided, will override the settings from the existing instance.<br/>
+        ///     <em>NOTE: Changing <see cref="XrmMockupSettings.MetadataDirectoryPath"/> will not trigger a reload</em>
+        /// </param>
+        public static XrmMockup2015 GetInstance(XrmMockup2015 xrmMockup, XrmMockupSettings settings = null)
+        {
+            return new XrmMockup2015(settings ?? xrmMockup.Settings, xrmMockup.Metadata, xrmMockup.Workflows, xrmMockup.SecurityRoles);
+        }
     }
 }
diff --git a/src/XrmMockup2016/AssemblyInfo.fs b/src/XrmMockup2016/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/XrmMockup2016/AssemblyInfo.fs
+++ b/src/XrmMockup2016/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/XrmMockup2016/XrmMockup.cs b/src/XrmMockup2016/XrmMockup.cs
index 69358d8d..cbd4f764 100644
--- a/src/XrmMockup2016/XrmMockup.cs
+++ b/src/XrmMockup2016/XrmMockup.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using Microsoft.Xrm.Sdk;
+using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 
 [assembly: InternalsVisibleTo("XrmMockup16Test")]
@@ -12,10 +13,12 @@ public class XrmMockup2016 : XrmMockupBase {
         private static Dictionary<XrmMockupSettings, XrmMockup2016> instances = new Dictionary<XrmMockupSettings, XrmMockup2016>();
 
 
-        private XrmMockup2016(XrmMockupSettings Settings) : 
-            base(Settings) {}
+        private XrmMockup2016(XrmMockupSettings Settings, MetadataSkeleton metadata = null, List<Entity> workflows = null, List<SecurityRole> securityRoles = null) :
+            base(Settings, metadata, workflows, securityRoles)
+        {
+        }
+
 
-        
         /// <summary>
         /// Gets an instance of XrmMockup2016
         /// </summary>
@@ -28,5 +31,18 @@ public static XrmMockup2016 GetInstance(XrmMockupSettings Settings) {
             instances[Settings] = instance;
             return instance;
         }
-    }
+
+        /// <summary>
+        /// Gets an instance of XrmMockup2016 using the same metadata as the provided
+        /// </summary>
+        /// <param name="xrmMockup">The existing instance to copy</param>
+        /// <param name="settings">
+        ///     If provided, will override the settings from the existing instance.<br/>
+        ///     <em>NOTE: Changing <see cref="XrmMockupSettings.MetadataDirectoryPath"/> will not trigger a reload</em>
+        /// </param>
+        public static XrmMockup2016 GetInstance(XrmMockup2016 xrmMockup, XrmMockupSettings settings = null)
+        {
+            return new XrmMockup2016(settings ?? xrmMockup.Settings, xrmMockup.Metadata, xrmMockup.Workflows, xrmMockup.SecurityRoles);
+        } 
+     }
 }
diff --git a/src/XrmMockup365/AssemblyInfo.fs b/src/XrmMockup365/AssemblyInfo.fs
index d82a8d8a..55c6b6b9 100644
--- a/src/XrmMockup365/AssemblyInfo.fs
+++ b/src/XrmMockup365/AssemblyInfo.fs
@@ -7,8 +7,8 @@ using System.Reflection;
 [assembly: AssemblyDescription("A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.")]
 [assembly: AssemblyCompany("Delegate A/S")]
 [assembly: AssemblyCopyright("Copyright (c) Delegate A/S 2017")]
-[assembly: AssemblyVersion("1.12.2")]
-[assembly: AssemblyFileVersion("1.12.2")]
+[assembly: AssemblyVersion("1.12.3")]
+[assembly: AssemblyFileVersion("1.12.3")]
 namespace System {
     internal static class AssemblyVersionInformation {
         internal const System.String AssemblyTitle = "XrmMockup";
@@ -16,7 +16,7 @@ namespace System {
         internal const System.String AssemblyDescription = "A simulation engine that can mock a specific MS CRM instance. Useful for testing and debugging business logic.";
         internal const System.String AssemblyCompany = "Delegate A/S";
         internal const System.String AssemblyCopyright = "Copyright (c) Delegate A/S 2017";
-        internal const System.String AssemblyVersion = "1.12.2";
-        internal const System.String AssemblyFileVersion = "1.12.2";
+        internal const System.String AssemblyVersion = "1.12.3";
+        internal const System.String AssemblyFileVersion = "1.12.3";
     }
 }
diff --git a/src/XrmMockup365/XrmMockup.cs b/src/XrmMockup365/XrmMockup.cs
index 790e5701..5ac2e7d2 100644
--- a/src/XrmMockup365/XrmMockup.cs
+++ b/src/XrmMockup365/XrmMockup.cs
@@ -16,11 +16,11 @@ namespace DG.Tools.XrmMockup {
     /// </summary>
     public class XrmMockup365 : XrmMockupBase {
 
-        private static Dictionary<XrmMockupSettings, XrmMockup365> instances = new Dictionary<XrmMockupSettings, XrmMockup365>();
+        private static readonly Dictionary<XrmMockupSettings, XrmMockup365> instances = new Dictionary<XrmMockupSettings, XrmMockup365>();
 
-
-        private XrmMockup365(XrmMockupSettings Settings) : 
-            base(Settings) {
+        private XrmMockup365(XrmMockupSettings Settings, MetadataSkeleton metadata = null, List<Entity> workflows = null, List<SecurityRole> securityRoles = null) :
+            base(Settings, metadata, workflows, securityRoles)
+        {
         }
         
         /// <summary>
@@ -36,5 +36,18 @@ public static XrmMockup365 GetInstance(XrmMockupSettings Settings) {
             instances[Settings] = instance;
             return instance;
         }
+
+        /// <summary>
+        /// Gets an instance of XrmMockup365 using the same metadata as the provided
+        /// </summary>
+        /// <param name="xrmMockup">The existing instance to copy</param>
+        /// <param name="settings">
+        ///     If provided, will override the settings from the existing instance.<br/>
+        ///     <em>NOTE: Changing <see cref="XrmMockupSettings.MetadataDirectoryPath"/> will not trigger a reload</em>
+        /// </param>
+        public static XrmMockup365 GetInstance(XrmMockup365 xrmMockup, XrmMockupSettings settings = null)
+        {
+            return new XrmMockup365(settings ?? xrmMockup.Settings, xrmMockup.Metadata, xrmMockup.Workflows, xrmMockup.SecurityRoles);
+        }
     }
 }
diff --git a/src/XrmMockupShared/Core.cs b/src/XrmMockupShared/Core.cs
index 8279d4a6..3bb36351 100644
--- a/src/XrmMockupShared/Core.cs
+++ b/src/XrmMockupShared/Core.cs
@@ -74,6 +74,7 @@ internal class Core
         private int baseCurrencyPrecision;
         public TimeSpan TimeOffset { get; private set; }
         public MockupServiceProviderAndFactory ServiceFactory { get; }
+        public ITracingServiceFactory TracingServiceFactory { get; }
 
         private List<string> systemAttributeNames;
 
@@ -112,6 +113,7 @@ public Core(XrmMockupSettings Settings, MetadataSkeleton metadata, List<Entity>
             this.db = new XrmDb(metadata.EntityMetadata, GetOnlineProxy());
             this.snapshots = new Dictionary<string, Snapshot>();
             this.security = new Security(this, metadata, SecurityRoles,db);
+            this.TracingServiceFactory = settings.TracingServiceFactory ?? new TracingServiceFactory();
             this.ServiceFactory = new MockupServiceProviderAndFactory(this);
 
             //add the additional plugin settings to the meta data
@@ -1155,14 +1157,14 @@ internal void ExecuteCalculatedFields(DbRow row)
 
                 if (definition == null)
                 {
-                    var trace = this.ServiceFactory.GetService(typeof(ITracingService)) as ITracingService;
+                    var trace = this.ServiceFactory.GetService<ITracingService>();
                     trace.Trace($"Calculated field on {attr.EntityLogicalName} field {attr.LogicalName} is empty");
                     return;
                 }
                 var tree = WorkflowConstructor.ParseCalculated(definition);
                 var factory = this.ServiceFactory;
                 tree.Execute(row.ToEntity().CloneEntity(row.Metadata, new ColumnSet(true)), this.TimeOffset, this.GetWorkflowService(),
-                    factory, factory.GetService(typeof(ITracingService)) as ITracingService);
+                    factory, factory.GetService<ITracingService>());
             }
         }
 #endif
diff --git a/src/XrmMockupShared/MockupServiceProviderAndFactory.cs b/src/XrmMockupShared/MockupServiceProviderAndFactory.cs
index e6a320d6..dbc74cab 100644
--- a/src/XrmMockupShared/MockupServiceProviderAndFactory.cs
+++ b/src/XrmMockupShared/MockupServiceProviderAndFactory.cs
@@ -24,12 +24,12 @@ internal class MockupServiceProviderAndFactory : IServiceProvider, IOrganization
         /// Creates new MockupServiceProviderAndFactory object
         /// </summary>
         /// <param name="core"></param>
-        public MockupServiceProviderAndFactory(Core core) : this(core, null, new TracingService()) { }
+        public MockupServiceProviderAndFactory(Core core) : this(core, null, core.TracingServiceFactory) { }
 
-        internal MockupServiceProviderAndFactory(Core core, PluginContext pluginContext, ITracingService tracingService) {
+        internal MockupServiceProviderAndFactory(Core core, PluginContext pluginContext, ITracingServiceFactory tracingServiceFactory) {
             this.core = core;
             this.pluginContext = pluginContext;
-            this.tracingService = tracingService;
+            this.tracingService = tracingServiceFactory.GetService();
         }
 
         /// <summary>
@@ -44,6 +44,11 @@ public object GetService(Type serviceType) {
             return null;
         }
 
+        public TService GetService<TService>() where TService: class
+        {
+            return GetService(typeof(TService)) as TService;
+        }
+
         public IOrganizationService CreateOrganizationService(Guid? userId)
         {
             return new MockupService(core, userId, this.pluginContext);
diff --git a/src/XrmMockupShared/Plugin/PluginManager.cs b/src/XrmMockupShared/Plugin/PluginManager.cs
index e9427509..5159c98e 100644
--- a/src/XrmMockupShared/Plugin/PluginManager.cs
+++ b/src/XrmMockupShared/Plugin/PluginManager.cs
@@ -378,7 +378,7 @@ public PluginExecutionProvider ToPluginExecution(object entityObject, Entity pre
                 {
                     // Create the plugin context
                     var thisPluginContext = CreatePluginContext(pluginContext, guid, logicalName, preImage, postImage);
-                    return new PluginExecutionProvider(pluginExecute, new MockupServiceProviderAndFactory(core, thisPluginContext, new TracingService()));
+                    return new PluginExecutionProvider(pluginExecute, new MockupServiceProviderAndFactory(core, thisPluginContext, core.TracingServiceFactory));
                 }
 
                 return null;
@@ -398,7 +398,7 @@ public void ExecuteIfMatch(object entityObject, Entity preImage, Entity postImag
                     var thisPluginContext = CreatePluginContext(pluginContext, guid, logicalName, preImage, postImage);
 
                     //Create Serviceprovider, and execute plugin
-                    MockupServiceProviderAndFactory provider = new MockupServiceProviderAndFactory(core, thisPluginContext, new TracingService());
+                    MockupServiceProviderAndFactory provider = new MockupServiceProviderAndFactory(core, thisPluginContext, core.TracingServiceFactory);
                     try
                     {
                         pluginExecute(provider);
diff --git a/src/XrmMockupShared/Requests/CalculateRollupFieldRequestHandler.cs b/src/XrmMockupShared/Requests/CalculateRollupFieldRequestHandler.cs
index 2cb47d4b..0b69aff7 100644
--- a/src/XrmMockupShared/Requests/CalculateRollupFieldRequestHandler.cs
+++ b/src/XrmMockupShared/Requests/CalculateRollupFieldRequestHandler.cs
@@ -40,7 +40,7 @@ internal override OrganizationResponse Execute(OrganizationRequest orgRequest, E
                 } else {
                     var tree = WorkflowConstructor.ParseRollUp(definition);
                     var factory = core.ServiceFactory;
-                    var resultTree = tree.Execute(dbEntity, core.TimeOffset, core.GetWorkflowService(), factory, factory.GetService(typeof(ITracingService)) as ITracingService);
+                    var resultTree = tree.Execute(dbEntity, core.TimeOffset, core.GetWorkflowService(), factory, factory.GetService<ITracingService>());
                     var resultLocaltion = ((resultTree.StartActivity as RollUp).Aggregation[1] as Aggregate).VariableName;
                     var result = resultTree.Variables[resultLocaltion];
                     if (result != null) {
diff --git a/src/XrmMockupShared/Requests/DeleteRequestHandler.cs b/src/XrmMockupShared/Requests/DeleteRequestHandler.cs
index f012086b..764c4db9 100644
--- a/src/XrmMockupShared/Requests/DeleteRequestHandler.cs
+++ b/src/XrmMockupShared/Requests/DeleteRequestHandler.cs
@@ -59,7 +59,7 @@ internal override OrganizationResponse Execute(OrganizationRequest orgRequest, E
                             }, userRef);
                             break;
                         case CascadeType.Restrict:
-                            var trace = core.ServiceFactory.GetService(typeof(ITracingService)) as ITracingService;
+                            var trace = core.ServiceFactory.GetService<ITracingService>();
                             trace.Trace($"Delete restricted for {relatedEntities.Key.SchemaName} when trying to delete {entity.LogicalName} with id {entity.Id}");
                             return new DeleteResponse();
                     }
diff --git a/src/XrmMockupShared/Requests/RetrieveMultipleRequestHandler.cs b/src/XrmMockupShared/Requests/RetrieveMultipleRequestHandler.cs
index 8348f65b..7d927525 100644
--- a/src/XrmMockupShared/Requests/RetrieveMultipleRequestHandler.cs
+++ b/src/XrmMockupShared/Requests/RetrieveMultipleRequestHandler.cs
@@ -40,8 +40,6 @@ internal override OrganizationResponse Execute(OrganizationRequest orgRequest, E
             db.PrefillDBWithOnlineData(queryExpr);
             var rows = db.GetDBEntityRows(queryExpr.EntityName);
 
-            Console.WriteLine($"\t row count : {rows.Count().ToString()}");
-
             var entityMetadata = metadata.EntityMetadata[queryExpr.EntityName];
 
 #if !(XRM_MOCKUP_2011 || XRM_MOCKUP_2013)
diff --git a/src/XrmMockupShared/TracingService.cs b/src/XrmMockupShared/TracingService.cs
index fac9b825..dbef46cc 100644
--- a/src/XrmMockupShared/TracingService.cs
+++ b/src/XrmMockupShared/TracingService.cs
@@ -1,21 +1,20 @@
 using Microsoft.Xrm.Sdk;
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
-namespace DG.Tools.XrmMockup {
-    internal class TracingService : ITracingService {
-        public void Trace(string format, params object[] args) {
+namespace DG.Tools.XrmMockup
+{
+	internal sealed class TracingService : ITracingService
+	{
+		public void Trace(string format, params object[] args)
+		{
 			try
 			{
 				Console.WriteLine(format, args);
 			}
-			catch 
+			catch
 			{
 				Console.WriteLine(format);
 			}
-        }
-    }
+		}
+	}
 }
diff --git a/src/XrmMockupShared/TracingServiceFactory.cs b/src/XrmMockupShared/TracingServiceFactory.cs
new file mode 100644
index 00000000..2ccbb8f3
--- /dev/null
+++ b/src/XrmMockupShared/TracingServiceFactory.cs
@@ -0,0 +1,15 @@
+using Microsoft.Xrm.Sdk;
+using System;
+
+namespace DG.Tools.XrmMockup
+{
+    public interface ITracingServiceFactory
+    {
+        ITracingService GetService();
+    }
+
+    internal class TracingServiceFactory : ITracingServiceFactory
+    {
+        public ITracingService GetService() => new TracingService();
+    }
+}
diff --git a/src/XrmMockupShared/Workflow/WorkflowManager.cs b/src/XrmMockupShared/Workflow/WorkflowManager.cs
index 1b916d08..77be9861 100644
--- a/src/XrmMockupShared/Workflow/WorkflowManager.cs
+++ b/src/XrmMockupShared/Workflow/WorkflowManager.cs
@@ -119,7 +119,7 @@ public void StageAsync(string operation, ExecutionStage stage,
         }
 
         internal void ExecuteWaitingWorkflows(PluginContext pluginContext, Core core) {
-            var provider = new MockupServiceProviderAndFactory(core, pluginContext, new TracingService());
+            var provider = new MockupServiceProviderAndFactory(core, pluginContext, core.TracingServiceFactory);
             var service = provider.CreateOrganizationService(null, new MockupServiceSettings(true, true, MockupServiceSettings.Role.SDK));
             foreach (var waitInfo in waitingWorkflows.ToList()) {
                 waitingWorkflows.Remove(waitInfo);
@@ -128,7 +128,7 @@ internal void ExecuteWaitingWorkflows(PluginContext pluginContext, Core core) {
 
                 var primaryEntity = shadowService.Retrieve(waitInfo.PrimaryEntity.LogicalName, waitInfo.PrimaryEntity.Id, new ColumnSet(true));
                 variables["InputEntities(\"primaryEntity\")"] = primaryEntity;
-                waitInfo.Element.Execute(waitInfo.ElementIndex, ref variables, core.TimeOffset, service, provider, new TracingService());
+                waitInfo.Element.Execute(waitInfo.ElementIndex, ref variables, core.TimeOffset, service, provider, provider.GetService<ITracingService>());
                 if (variables["Wait"] != null) {
                     waitingWorkflows.Add(variables["Wait"] as WaitInfo);
                 }
@@ -382,9 +382,9 @@ private void Execute(Entity workflow, string operation, object entityObject, Ent
         }
 
         internal WorkflowTree ExecuteWorkflow(WorkflowTree workflow, Entity primaryEntity, PluginContext pluginContext, Core core) {
-            var provider = new MockupServiceProviderAndFactory(core, pluginContext, new TracingService());
+            var provider = new MockupServiceProviderAndFactory(core, pluginContext, core.TracingServiceFactory);
             var service = provider.CreateAdminOrganizationService(new MockupServiceSettings(true, true, MockupServiceSettings.Role.SDK));
-            return workflow.Execute(primaryEntity, core.TimeOffset, service, provider, provider.GetService(typeof(ITracingService)) as ITracingService);
+            return workflow.Execute(primaryEntity, core.TimeOffset, service, provider, provider.GetService<ITracingService>());
         }
 
         internal WorkflowTree ParseWorkflow(Entity workflow) {
diff --git a/src/XrmMockupShared/XrmMockupBase.cs b/src/XrmMockupShared/XrmMockupBase.cs
index ab821e82..ff9702b4 100644
--- a/src/XrmMockupShared/XrmMockupBase.cs
+++ b/src/XrmMockupShared/XrmMockupBase.cs
@@ -8,6 +8,8 @@
 using Microsoft.Xrm.Sdk.Query;
 using Microsoft.Crm.Sdk.Messages;
 using System.IO;
+using System.Diagnostics;
+using System.Collections.ObjectModel;
 
 namespace DG.Tools.XrmMockup
 {
@@ -50,28 +52,50 @@ public EntityReference BaseCurrency {
         private Core Core;
         private MockupServiceProviderAndFactory ServiceFactory;
 
+        private readonly Dictionary<string, long> timers;
+        public IReadOnlyDictionary<string, long> Timers => new ReadOnlyDictionary<string, long>(timers);
+
+        protected XrmMockupSettings Settings { get; }
+        protected MetadataSkeleton Metadata { get; }
+        protected List<Entity> Workflows { get; }
+        protected List<SecurityRole> SecurityRoles { get; }
 
         /// <summary>
         /// Create a new XrmMockup instance
         /// </summary>
-        /// <param name="settings"></param>
-        protected XrmMockupBase(XrmMockupSettings settings) {
+        protected XrmMockupBase(XrmMockupSettings settings, MetadataSkeleton metadata = null, List<Entity> workflows = null, List<SecurityRole> securityRoles = null) {
+            timers = new Dictionary<string, long>();
+            Settings = settings;
+
+            Stopwatch stopwatch = Stopwatch.StartNew();
+            var metadataDirectory = settings.MetadataDirectoryPath ?? "../../Metadata/";
+            Metadata = metadata ?? Utility.GetMetadata(metadataDirectory);
+            timers[nameof(Utility.GetMetadata)] = stopwatch.ElapsedMilliseconds;
+
+            stopwatch.Restart();
+            Workflows = workflows ?? Utility.GetWorkflows(metadataDirectory);
+            timers[nameof(Utility.GetWorkflows)] = stopwatch.ElapsedMilliseconds;
 
-            var metadataDirectory = "../../Metadata/";
-            if (settings.MetadataDirectoryPath != null)
-                metadataDirectory = settings.MetadataDirectoryPath;
-            MetadataSkeleton metadata = Utility.GetMetadata(metadataDirectory);
+            stopwatch.Restart();
+            SecurityRoles = securityRoles ?? Utility.GetSecurityRoles(metadataDirectory);
+            timers[nameof(Utility.GetSecurityRoles)] = stopwatch.ElapsedMilliseconds;
 
-            List<Entity> workflows = Utility.GetWorkflows(metadataDirectory);
-            List<SecurityRole> securityRoles = Utility.GetSecurityRoles(metadataDirectory);
+            stopwatch.Restart();
+            Core = new Core(settings, Metadata, Workflows, SecurityRoles);
+            timers[nameof(Core)] = stopwatch.ElapsedMilliseconds;
+
+            stopwatch.Restart();
+            ServiceFactory = new MockupServiceProviderAndFactory(Core);
+            timers[nameof(ServiceFactory)] = stopwatch.ElapsedMilliseconds;
 
-            this.Core = new Core(settings, metadata, workflows, securityRoles);
-            this.ServiceFactory = new MockupServiceProviderAndFactory(this.Core);
             if (settings.EnableProxyTypes == true) {
+                stopwatch.Restart();
                 EnableProxyTypes();
+                timers[nameof(EnableProxyTypes)] = stopwatch.ElapsedMilliseconds;
             }
-        }
 
+            stopwatch.Stop();
+        }
 
         /// <summary>
         /// Enable early-bound types from the given context
diff --git a/src/XrmMockupShared/XrmMockupSettings.cs b/src/XrmMockupShared/XrmMockupSettings.cs
index 4d4e9756..442d7c69 100644
--- a/src/XrmMockupShared/XrmMockupSettings.cs
+++ b/src/XrmMockupShared/XrmMockupSettings.cs
@@ -1,5 +1,4 @@
 using Microsoft.Xrm.Sdk.Client;
-using Microsoft.Xrm.Sdk;
 using System;
 using System.Collections.Generic;
 #if !(XRM_MOCKUP_2011 || XRM_MOCKUP_2013)
@@ -60,6 +59,12 @@ public class XrmMockupSettings
         /// </summary>
         public MetaPlugin[] IPluginMetadata { get; set; }
 
+        /// <summary>
+        /// <para>Optional factory for creating new instances of ITracingService.</para>
+        /// <para>If not specified, uses the built-in <see cref="TracingService"/></para>
+        /// </summary>
+        public ITracingServiceFactory TracingServiceFactory { get; set; }
+
 #if XRM_MOCKUP_365
         /// <summary>
         /// List of Extensions to XrmMockup. This can be used to extend XrmMockup functionality to a certain degree.
diff --git a/src/XrmMockupShared/XrmMockupShared.projitems b/src/XrmMockupShared/XrmMockupShared.projitems
index 8022c883..b1e4ac4d 100644
--- a/src/XrmMockupShared/XrmMockupShared.projitems
+++ b/src/XrmMockupShared/XrmMockupShared.projitems
@@ -80,6 +80,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Serialization\TableDTO.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Serialization\TableRowDTO.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)TracingService.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)TracingServiceFactory.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Utility.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Workflow\WorkflowManager.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)XmlHandling.cs" />
diff --git a/tests/SharedTests/TestZipSnapshot.cs b/tests/SharedTests/TestZipSnapshot.cs
index a6ee9c8e..90ea34c2 100644
--- a/tests/SharedTests/TestZipSnapshot.cs
+++ b/tests/SharedTests/TestZipSnapshot.cs
@@ -3,6 +3,7 @@
 using DG.XrmFramework.BusinessDomain.ServiceContext;
 using DG.Tools.XrmMockup;
 using Xunit;
+using System.ServiceModel;
 
 namespace DG.XrmMockupTest
 {
@@ -26,14 +27,8 @@ public void TestTakeSnapshot()
 
             crm.ResetEnvironment();
 
-            try
-            {
-                Contact.Retrieve(orgAdminService, contact.Id);
-            }
-            catch (Exception ex)
-            {
-                Assert.Equal(ex.Message, $"The record of type '{contact.LogicalName}' with id '{contact.Id}' does not exist. If you use hard-coded records from CRM, then make sure you create those records before retrieving them.");
-            }
+            var ex = Assert.Throws<FaultException>(() => Contact.Retrieve(orgAdminService, contact.Id));
+            Assert.Equal(ex.Message, $"The record of type '{contact.LogicalName}' with id '{contact.Id}' does not exist. If you use hard-coded records from CRM, then make sure you create those records before retrieving them.");
 
             crm.RestoreZipSnapshot("testfile");